hhunter318, I assumed when you post this "For the 7x57 AI, I'm getting my smith to chamber my die blank with the PT&G full length die reamer" and that means your gunsmith is using a die reamer and not a chamber reamer? If he using the chamber reamer I hope the die blank you got is from Newlon
http://newlonprecision.com/ make a good neck die.